Brushing apparatus for metallic strip



w. M. QUIGLEY ET AL ,2

BRUSHING APPARATUS FOR METALLIC STRIP April 7, 1942.

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April 7, 1942- w. M. QUIGLEY ETAL 2,278,944

- BRUSHING APPARATUS FOR METALLIC STRIP Filed April 28, 193? 4' Sheets-Sheet 2 h aveizlars:

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W. M. QUIGLEY ErAL BRUSHING APPARATUS FOR METALLIC s'r-RI Filed April 28,1959

4 Sheets- Sheet a April 7, ,1942.

WQM. QUIGLEY ETAL BRUSHING APPARATUS FOR METALLIC STRIP Fild April 28, 1959 4 Sheets-Sheet 4 Patented Apr. 7, 1942 BRUSHING APPARATUS FOR METALLIC STRIP Winfred M. Quigley and Ewart S. Taylerson, Pittsburgh, Pa., assignors to Carnegie-Illinois Steel Corporation, a corporation of New Jersey Application April 28, 1939, Serial No. 270,699

1 Claim.

The present invention relates to a brushing apparatus for metallic strip.

An object of the present invention resides in uniformly brushing the surface of the metallic strip during its passage through the machine.

A further object of the present invention resides in supporting the metallic strip during its passage through the machine so that it will maintain a uniform contact with the brushing means and in such manner as to provide minimum slippage between the strip and the supporting means. Y Another object of the present invention resides in providing a honing or grinding device for maintaining a constant uniform cylindrical surface to the brushing means.

A still further object resides in providing means fbr adjusting both the grinding device as well as the backing-up means with relation to the rotary brushes so as to maintain at all times direct contact of the brush unit with the metallic strippassing through the machine.

Other objects and advantages will become apparent at the description proceeds and reference is had to the accompanying drawings, in which:

' Figure l is-a side elevation of the present invention with the side wall of the housing removed;

Figure 2 is a of Figure 1; L

Figure 3 is a sectional elevation showing, in detail, the hold-down mechanism;

Figure4 is a sectional elevation on line IV-IV of Figure 3; a

Figure 5 is a plan view of the honing or grinding mechanism; and

Figure 6 is a sectional elevation on line sectional elevation on line II -II of Figure 5.

In the drawings, the numeral 2 represents a I base for supporting spa'ced upright frame members 3 between which are positioned, in any conventional manner, the rotary brush units, an

adjustable backing-up roll for each of said brush units, a brush grinding mechanism for each brush unit and sufficient spray nozzles or pipes to assist in rinsing the strip during its passage through the brushing machine and maintaining the brushes wetat all times.

In the drawings, there are shown positioned between the upright supporting members 3, six rotary brush units indicated generally at 4. These brush assembly units are so positioned and arranged throughout the brushing machine as to alternately brush each side of the strip vmaterial passing therethrough.- Three of the brush units operate upon one surface of the strip material and are in substantially the same horizontal plane, while the other three brush units operate upon the other surface of the strip material and are positioned in a plane parallel to the upper brush units. The brushes are staggered with respect to each other so that the opposite surfaces of the strip material are alternately subjected to a brushing action.

Positioned in a horizontal plane intermediate the upper and lower brush units are six backingup rolls, one" for each rotary brush unit. These backing-up rolls 5 are supported, in any conventional manner, between the side frames of the brushing machinei and include vertically positioned-tracks or guideways 6. These guideways 6 permit the respective backing-up rolls to be moved vertically with respect to their complementary brush units. By such a movement, the strip material. can be forced against the rotary brushes to the extent that the desired degree of contact for uniform brushing of the strip material can be obtained. The adjustability of the backing-up rolls also permits the desired degree of contact to be maintained at all times. Such adjustment of the backing-up rolls is desirable since wear of the brushes results in a lessening of area of contact. The adjustment of the backing-up rolls permits the compensation of such wear on the brushes. Each backing-up roll 5 is supported upon a shaft I, mounted in a pair of bearings 8 to each of which is secured an adjusting screw 9. A worm wheel III is keyed to an internally threaded collar on each adjusting screw and is in engagement with a worm l2, carried on a shaft l4, whi h shaft is rotated through movement pf the li nd wheel I5 and extends entirelyoacrbss the space between the upright supporting embers if. of the frame. Upon rotation of the proper hand wheel I5, any backing-up roll 5 can be moved with respect to its complementary brush to obtain a micrometer adjustment of the roll with respect to said. brush. This positions the strip into the required contact with that particular rotary brush so that there is provided a uniform brushing action of the strip material. Extending between the upright supporting members 3 at spaced points throughout the machine both at the top and bottom thereof, are transverse supporting frame members It and I! for suitably supporting, in any conventional manner, the grinding or honing mechanism. In the present instance, this mechanism has been shown -'as including a shaft l8 extending from one of the "frame members 3 into a'housing l9 with a worm 20 keyed thereon so that aworm 2! is secured, in any conventional manner,- upon an internally threaded collar 22 within .which is adapted to move, upon rotation of the worm wheel 2!, a threaded shaft 23 upon the end of which is pivotallysupported a grinding or honing device 26 carried, in any conventional manner, by bracket arms 25. These bracket arms are rigidly connected to a shaft 26, the ends of which are pivotally supported by any conventional type bearing mechanism mounted on the bracket arms Z'E carried by the channel members it and i7. When it is desired to true the surface of the rotary brush over its entire area, the grinding or honing device 26 is adjusted byrotating shaft 58, which in turn rotates worm 2t and worm wheel 211 so as to advance, as desired, the grinding or honing device 2 1 into contact with the cylindrical surface of the rotary brush assembly unit 5, thereby truing the cylindrical surface of the brush throughout its entire area in order to main- .tain the desired uniform brushing action upon ley and Ewart S. Taylerson, Serial No. 270,707.

In operation of the present invention, the continuous strip indicated at S, is shown as being fed into the machine from a previous processing device which, for example, may be an electroplating apparatus and passes down around the first backing-up roll 5 and into contact with the rotary brush 6 so that an initial brushin action may tak place upon the surface of the strip material. The strip is then passed upward- 1y over the next adjacent backing-up roll and in contact with the upper rotary brush to provide a uniform brushing action upon the opposite surface of the strip material, after which it is directed downwardly over a third backing-up roll and into contact with a second lower rotary brush. This directing of the strip in a, tortuous path through the machine affords a means of firm contact with the backing-up rolls so as to minimize p ge of the material on the backing-up roll during the brushing operation. In addition to the brushing action, there are provided at predetermined positions, spray'nozzles or pipes 26 for directing a spray of water upon each surface of the strip during its passage through the machine and also upon each rotary brush. By directing the spray of water upon the rotary brushes as well as upon the surfaces of the strip, the surfaces are not only kept free of any foreign matter which might mar their appearance, but the water dissipates the heat developed at the point of contact with the brushes and thereby produces a better appearing finished product. a

During the operation of the apparatus, thehoning devices are kept in constant contact with the surface of the rotary brushes so that uneven wear of the brushes is prevented and truly cylindrical brushing surfaces are maintained.

Under such a construction, there is provided an apparatus which uniformly brushes the strip on both sides and washes the same during its passage therethrough, which action brightens the surface of the strip material.

While we have shown and described a specific embodiment of the present invention, it will be seen that we do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of the invention, as defined by the following claim;

We claim:

Apparatus for brushing metallic strip during its longitudinal movement comprising, in combination, a roll adapted to contact the metallic strip and deflect it into an arcuate path, a power 

